Device to prevent rotation of bobbins



June 29 1926.

' R. GVTURNER DEVICE To PREVENT ROTATION 0F BOBBINS Filed. on. 13. 1924 Patented June 29, 1926.

- UNITED STATES PATENT QFFICE.

RICHARD GREENLEA'E TURNER, 0F WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON & KNOWLES LOOM VTORKS, OF WORCESTER, MASSACHUSETTS, A COR.

IOBATION OF MASSACHUSETTS.

DEVICE TO PREVENT ROTATION OF BOBBINS.

Application filed October 13, 1924. Serial No. 743,204.

In looms of this type it is common to arrange the bobbins in vertical compartments from the lower ends of which the bobbins are discharged to a common transler.

point. It has been found that as the bobbins await transfer they are subject to such vibrations as cause them to rotate on their axes. The result of this is either to wind up the end which extends to the thread holder or to unwind an excess of filling such as will become entangled with some part of the loom. In either event the filling is likely to be broken or improperly threaded at the time of transfer and it is the general object of my invention to provide improved means for arresting rotation ofthe bobbins.

The device shown in application Serial No. 690,268 employs a weight for each compartment so arranged that it may be raised and held temporarily away from the bobbins while the operator is placing a fresh supply of bobbins in the compartment. A plunger is arranged to pass under an overhanging portion of each weight and is withdrawn at each actuation of the replenishing mechanism to advance a bobbin to transfer position. With this construction the weights cannot be released by a downward pressure on the weights themselves.

It is a more particular object of my invention to provide a plurality of yielding means for holding the weights releasably, all of said means being controlled from a single point and the weights being releasable by hand independent of the replenishing mechanism.

It is a further object of my invention to provide means for controlling all of the weight holding means from a common point so that the operator may release the weights by a single motion.

lVith these and other objects in view which will appear as the description proceeds my invention resides 'inthe combination and arrangement of parts hereinafter described and set forth in the claims.

' In the accompanying drawings, wherein I have shown one form of my invention Fig. 1 is a side elevation of a replenishing mechanism having my invention applied thereto as viewed from the interior of the loom, Fig. 2 is a top plan view of certain of the structure shown in Fig. 1,

Fig. 3 is a front elevation direction of arrow 3, Fig. 1,

Fig. lis a fragmentary rear elevation of the structure shown in Fig. 1, and

Fig. 5 is a detail perspective view of one of the weights.

Referring to the drawings it will be seen that I have provided a weft replenishing mechanism 10 having mounted thereon for sliding and angular movement a shaft 11. to which are secured fingers 12. Upright slides 13, one for each compartment, are controlled one at a time by the fingers and are provided at the upper ends thereof with spring looking in the actuated dogs 14 which cooperate with an elongated lever 15 secured to shaft 16. The shaft 16 is journaled in the frame of the replenishing mechanism and is oscillated by the lever 15 when the latter is depressed to raise the transferrer latch (not shown) into engaging position with the bunter on the lay. Extending from the frame 10 are flanges 17 which define bobbin compart-' ments 18. The matter thus far described is of common construction and may be made as set forth in Patent No. 1,030,748.

In carrying out my invention I provide the upper end of the frame 10 with extensions 30 and 31, respectively. Extending across the top of the flanges 17 is a slide 32 provided with longitudinal slots 33 which receive guide studs 34 threaded into the upper portion of the frame 10. The slide 32 is provided with a plurality of transverse slots 35 which register with the compart ments 18. Extending through each of the slots 35 is'a spring weight holder 36 hav" ing a horizontally extending portion 37 by which it may be adjustably secured to the slide by means of screw 38. Each spring holder 36 has a downwardly extending end 39 provided with an offset 10 which terminates .in a downwardly and rearwardly inclined tip 41. The rear end of slide 32 is bent downwardly and has threaded therein a stop screw 42 positioned for engagement with the extension 30 and the forward end of the slide is provided with a downwardly extending arm 43 positioned for engagement with a coiled compression spring 44 received in a pocket 45 formed in the forward extension 31.

The devices for engaging the bobbins and preventingrotation thereof comprise a series of weights 46 each having a suitable hand hold 47 and fin 48. The upper end of each weight is provided with a depression 49 into which extends a rounded over-hang 50 projecting somewhat beyond and above the innor lower wall of the depression. The .over hang 5G is proportioned to lie above the offset 40 in the spring 36 when the weight is raised out ot'the operators way. Guide strips 51 are secured to the irame 10 and spaced from certain of the flanges 17' to define grooves for =the fins 48.

From the matter thus far described it is to be understood that the weights 46 are normally in the compartments, being held therein by the engageinent of the [ins 48 with guide strips 51. and rest on the top bobbins to prevent their rotation. lVhen it is desired to place full bobbins in the compartments lS as the latter are depleted by the action of the replenishing mechanism, the operator will lift the weights as by the handle 47 until the offset 40 of the corresponding spring passes under the overhang 50. This will be done for as many compartments as need replenishing, the weights being held in elevated position so as not to interfere with the operator. VVhe'n all the compartments have been filled the :operator can press the depending arm 48 rear-wardly against the action of spring 44, the result of which will be to move all 01 the depending springs 36 away from the weights so'that the latter will fallen the bobbins. It is to be understood that spring 44 is sufiicientl-y strong to with-- stand the combined opposed pressure of all the springs 36.

It is found in devices of'this kind that the operator will occasionally leave the loom with the weights in raised position and in order to :insure releasing otthe weights 1 have provided the slide with an offset boss 52 which is rounded as shown in Fig. 1 and positioned for engagement with the upper arm 53 of a lever 54 pivoted as at 55 to the frame 10. The lower arm 56 0i lever 54 is provided with a cam face 57 which is positioned for engagement with the inner end 58 of a lever 59 secured to shaft 16 in adjusted position by means of set screw 60. These parts are so proportioned that a downward movement otthe lever 59caused by a partial rotation of shaft 16 will pass end 58 thereof across the cam 57 to rock the lever 54 on its pivot and cause the slide 32 to move against the action or" spring 44.

In the normal operation of the device the slides 13 'will'be down and at indication of substantial weft "exhaustion the slide correspending to the depleted shuttle will be raised by means of one or another of the fingers 12, the latter being positioned by a connection with the box motion. As the slide 13 assumes its upper position the dog 14 pivoted thereon will swingoutwardly to the position shown in Fig. 3 and will overhang the lever 15. When theindicating shuttle again returns the slide 13 will be lowered by the finger-12 which previously raised it and the dog 14 will engage lever15 and cause a partial rotation of shaft 16, the result of which is to move the slide 32 as previously described. Thus it will be seen that the mechanism is given a weight-releasing movement at each operation of the replenishing mechanism.

:From the foregoing it will be .seenithat I have provided a series :of devices to .netaiinand release bobbin engaging weights, allxof said devices being controlled .f-romza common point and that the weights can be released independently of any action Oil the parts of the replenishing mechanism. Also, the weights are so constructed that if'idesired the operator can immediately release each weight after filling the corresponding com.- partment because of the yieldingactien of the holding springs .36.

Having thus described my invention it will be apparent that changes and modifications :may be made therein bythose skilled in the art without departing from the spirit and scopeiof the invention, and Ido not wish to be limited to the details herein disclosed, but what I claim is:

1. In a weftreplenishing mechanism ifor looms, a plurality of .bobbin compartments, a weight movable in each compartment; means for holding said weights yieldingly in raised position and :meansrcommon to said means to release said weight-s simultaneously.

2. In a weft replenishing mechanism for looms, .a plurality f'of bobbin compartments, a weight associated with and movable in each compartment for engagement with the bobbins therein, a series of weightmetaining means, one for each weight, to hold any 'or all of said weights in raisedsposition, and a single device common to all of said re taining means to movethe latter to weight releasing position.

3. In a weft replenishing mechanism for looms, a plurality =of bobbin compartments, a weight for each' compartmentifonengaging the bobbins therein, a slide common [to all the compartments, resilient mean-s extending from the slide into each compartment and positioned'for engagement with the weights to hold the latter in raised position, and means to move said slideyto release all of said weights.

4. In a weft replenishing m'echan-ismfor looms, a plurality of bobbin compartments,

a bobbin engaging weight in each compartment, a slide common to all the compartments, and means carried by the slide to retain the weights, sliding movement of the slide acting to release the weights.

5. In a weft replenishing mechanism for looms, a plurality of bobbin compartments, a bobbin engaging weight in each compartment, a resilient weight engaging device in each compartment and means to cause said devices to move in unison to release the weights.

6. In a weft replenishing mechanism for looms, a plurality of bobbin compartments, a weight associated with each compartment to engage the bobbins therein, a plurality of devices, one in each compartment, to engage the weights, means acting to hold said devices in weight retaining position, and means to move said devices in unison to weight releasing position.

7. In a weft replenishing mechanism for looms, a plurality of bobbin compartments, bobbin engaging weights movable in the compartments, a yielding retaining device for each weight, resilient means strong enough to overpower all of said retaining weights and hold the same in weight retaining position, and means to move said retaining devices in unison against the action of the resilient means.

8. In a weft replenishing mechanism for looms, a plurality of bobbin compartments,

a weight for each compartment, yielding retaining means for each weight, each of said means being capable of slight yielding movement independently of the remaining means by downward pressure on the asso ciated weight to release the latter.

9. A weight releasing slide for a weft replenishing mechanism having a plurality of compartments and weights movable in the compartments, said slide having a plurality of weight retainers extending therefrom and having means formed thereon by which .said slide can be actuated to move all of said retainers in unison.

10. A weight releasing slide for a weft replenishing mechanism having a plurality of compartments with weights therein, said slide having a plurality of perforations therein through which extend weight re tainers, and means formed on the slide by which the latter may be actuated to move all of said retainers in unison.

11. A weight retaining slide for weft replenishing mechanism for looms having com partments with weights therein, .said slide having a plurality of resilient weight retainers secured thereto and extending there from and means formed on the slide by which the latter may be actuated to move all of the weight retainers in unison.

In testimony whereof I hereunto affixed my signature.

RICHARD GREENLEAF TURNER. 

